Improvement in paper boxes



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ROBERT N. STEWART, 0F PHILADELPHIA, REN N SYLVAN IA.

i Letters Patent No. 61,028, dated January 8, 1867; anteolated December 30, 1865.

IMPROVEMENT IN PAPER BOXES.

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TO ALL WHOM IT MAY -CONGERN:

Be it known-that I, ROBERT N. STEWART, ofthe city of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Paper Boxes; and I do hereby declare that the following is a full, clear, and exact vdescription of the Sarno, reference being had to the accompanying drawings, making a part of this specication, in which- Figure 1 is an end elevationof a round-cornered paper box having my said improvement applied thereto.

Figure 2 a horizontal section of fig. 1.

Figure Salitre section enlarged; and

Figure 4 a like enlarged section, showing my said improvement as when applied to a square-cornered box.

Like letters of reference indicating the same parts when in the diferent iigures.

The object of my improvement is to increasethe stiiiness and durability of the joinings of the' sides or ends of large paper boxes, especially of such as are used for keeping ladies bonnets, maiis, &c., and also to economize inthe pasteboard material of which they are made, by enabling the manufacturer to employ or use upy the smaller pieces of the material in their production; and thcnature of my invention consists in the employment of a thin sheet-metal, double clamp, constructed and applied vas hereinafter described andset forth, for thc purpose of uniting together any two edges oi' the pieces of pasteboard of which such paper boxes are made.

In the drawings, A is the double clamp, and B B two edges of the pasteboard, as connected together vby the same. The clamp A is made of two narrow strips of thin sheet metal, each bent along in the middle of' its length so as t0 bring its two approached halves nearly together, or so as to leave a sulhcient space between the said halves for the reception of the edge end of the pasteboard. The backs al of these two bent strips are then soldered together, either in the relation to each other shown in figs. 1, 2, and 3, for straight junctions, or in the relation to each other shown in fig. 4, for angular junctions. In applying these clamps A, the edges oi' the pasteboard of which the box is to be made are respectively 4inserted betwfeen the two parallel edges on each side of the double clamp A, and the Whole then secured together permanently by the small rivets a2 a2. It .Will be seen that in this manner all the edges required to be connected together, in 'forming the body of either the .box or its cover, can be secured quickly together in a very rigid, neat, and substantial manner; that small pieces of the pasteboard can be used if desired, and thatthe strength and stiiiness of-the box will be much increased. For the purpose of aii'oiding a ready means of fastening the cover to the box, when so required, a small wire loop, a3, is soldered fast on the outer sides of both the cover and the box, so that short cords may bek'applied through them and used for tying the two partstogether. The clamps may be readily covered by pasting the usual covering paper over them if desired.

What I claim as my invention, and desire to secure by Letters Patent, is confined to the following, viz:

I claim securing the edges of the pasteboard, (of which the said paper boxes are mada) permanently together by means of the double clamps A, of thin sheet metal, constructed and applied substantially'as and for thefpurposes as described.

I also claim, in combination with the said double clamps A, the small metallic loops a3, substantially as and for the purpose described.

ROBERT N. STEWART.

Witnesses BENJ. MonrusoN, J omi WHITE. 

